An Integrated Image Clarity Method for Coal Mine Safety Monitoring

According to the poor image quality of the monitoring system in coal mine monitoring, an integrated image clarity method was presented which using adaptive multi-level noise reduction median filter based on the direction in the spatial domain to denoise the image first, then using multi-wavelet transform to enhance the low-light image in the transform domain. This integrated approach combines the benefits of spatial domain and transform domain noise reduction and enhancement. It can reduce the impulse noise effectively, while retaining good image detail features of the coal mine images. Experiments show that the method can greatly improve the clarity of the image of coal mine so can improve the readability of the image, and this is of great significance for the coal mine safety monitoring.